| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [verb] for | 6384 |
|
| 2 | [been] [vb pp] for | 4628 |
|
| 3 | [be] used for | 2640 |
|
| 4 | [been] used [prep] | 1086 |
|
| 5 | [been] used [prep] | 1086 |
|
| 6 | [been] use for | 254 |
|
| 7 | [been] used for | 248 |
|
